Basic properties of Gamma-ray loud blazars

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In this paper, a method is proposed to determine the basic properties of γ-ray loud blazars, among them the central black hole mass, M, the Doppler factor, δ, the propagation angle of the γ-rays with respect to the symmetric axis of a two-temperature accretion disk, Φ, and the distance (i.e. the height above the accretion disk), d at which the γ-rays are created, for seven γ-ray loud blazars with available GeV variability timescales and in which the absorption effect of a γ-ray and the beaming effect have been taken into account. Our results indicate that, if we take the intrinsic γ-ray luminosity to be λ times the Eddington luminosity, Lγin = λLEdd., the masses of the blazars are in the range of (4 131)× 10⁷M, the Doppler factors (δ) lie in the range of 0.57 to 5.33 the angle (Φ) is in the range of 13∘ to 43∘ and the distance (d) is in the range of 26Rg to 411Rg. Our model results are independent of γ-ray emission mechanisms but they do depend on the X-ray emission mechanism of the accretion disk.